Avast malware researcher Jakub Kroustek has discovered the Kirk Ransomware, which encrypts files with AES encryption and then appends the .KIRK extension to the filename. When done encrypting files it will also create a ransom note named RANSOM_NOTE.txt.
If you plan on paying the ransom, you must not delete the PWD file located in the same folder as the executable.This file contains your encrypted decryption key and is required by the ransomware developer to get your keys back.
This ransomware requires payments to be made in Monero rather than bitcoin.
More information can be found here: Star Trek Themed Kirk Ransomware Brings us Monero and a Spock Decryptor!